freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/take-home-projects/show-national-contiguity-with-a-force-directed-graph.md

---
id: bd7198d8c242eddfaeb5bd13
title: Show National Contiguity with a Force Directed Graph
challengeType: 3
forumTopicId: 302367
dashedName: show-national-contiguity-with-a-force-directed-graph
---

# --description--

**Objective:** Build a [CodePen.io](https://codepen.io) app that is functionally similar to this: <https://codepen.io/freeCodeCamp/full/xVopBo>.

Fulfill the following [user stories](https://en.wikipedia.org/wiki/User_story). Use whichever libraries or APIs you need. Give it your own personal style.

**User Story:** I can see a Force-directed Graph that shows which countries share borders.

**User Story:** I can see each country's flag on its node.

**Hint:** Here's a dataset you can use to build this: <https://raw.githubusercontent.com/DealPete/forceDirected/master/countries.json>

**Hint:** You can create a spritesheet of national flags at <https://www.flag-sprites.com>.

When you are finished, include a link to your project on CodePen and click the "I've completed this challenge" button.

You can get feedback on your project by sharing it on the [freeCodeCamp forum](https://forum.freecodecamp.org/c/project-feedback/409).

# --solutions--

```js
// solution required
```
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00			`---`
			`id: bd7198d8c242eddfaeb5bd13`
			`title: Show National Contiguity with a Force Directed Graph`
			`challengeType: 3`
fix(curriculum): Added forumTopicId to remaining 1200 challeng… (#36558) 2019-08-05 09:17:33 -07:00			`forumTopicId: 302367`
feat(curriculum): restore seed + solution to Chinese (#40683) * feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com> 2021-01-13 03:31:00 +01:00			`dashedName: show-national-contiguity-with-a-force-directed-graph`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00			`---`

Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`# --description--`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`Objective: Build a [CodePen.io](https://codepen.io) app that is functionally similar to this: <https://codepen.io/freeCodeCamp/full/xVopBo>.`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`Fulfill the following [user stories](https://en.wikipedia.org/wiki/User_story). Use whichever libraries or APIs you need. Give it your own personal style.`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`User Story: I can see a Force-directed Graph that shows which countries share borders.`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`User Story: I can see each country's flag on its node.`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`Hint: Here's a dataset you can use to build this: <https://raw.githubusercontent.com/DealPete/forceDirected/master/countries.json>`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`Hint: You can create a spritesheet of national flags at <https://www.flag-sprites.com>.`

			`When you are finished, include a link to your project on CodePen and click the "I've completed this challenge" button.`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`You can get feedback on your project by sharing it on the [freeCodeCamp forum](https://forum.freecodecamp.org/c/project-feedback/409).`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`# --solutions--`
feat(challenge-md): Add initial markdown challenge files 2018-09-30 23:01:58 +01:00
			```js
			`// solution required`
			```